CN117534388A - Inorganic non-expansion type fireproof paint - Google Patents
Inorganic non-expansion type fireproof paint Download PDFInfo
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- CN117534388A CN117534388A CN202311752746.3A CN202311752746A CN117534388A CN 117534388 A CN117534388 A CN 117534388A CN 202311752746 A CN202311752746 A CN 202311752746A CN 117534388 A CN117534388 A CN 117534388A
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- 239000003973 paint Substances 0.000 title claims abstract description 26
- 239000003063 flame retardant Substances 0.000 claims abstract description 77
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000839 emulsion Substances 0.000 claims abstract description 49
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 14
- -1 polypropylene Polymers 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 8
- 239000010451 perlite Substances 0.000 claims abstract description 8
- 235000019362 perlite Nutrition 0.000 claims abstract description 8
- 239000010455 vermiculite Substances 0.000 claims abstract description 8
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 8
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 8
- 239000004743 Polypropylene Substances 0.000 claims abstract description 7
- 229920002678 cellulose Polymers 0.000 claims abstract description 7
- 239000001913 cellulose Substances 0.000 claims abstract description 7
- 229920001155 polypropylene Polymers 0.000 claims abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 7
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 12
- 239000004088 foaming agent Substances 0.000 claims description 12
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 9
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 9
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000001038 titanium pigment Substances 0.000 claims description 5
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical group NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical group OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000001694 spray drying Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 2
- PTJWCLYPVFJWMP-UHFFFAOYSA-N 2-[[3-hydroxy-2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)COCC(CO)(CO)CO PTJWCLYPVFJWMP-UHFFFAOYSA-N 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 229920003064 carboxyethyl cellulose Polymers 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 239000000052 vinegar Substances 0.000 claims description 2
- 235000021419 vinegar Nutrition 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 7
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920002125 Sokalan® Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000001752 chlorophylls and chlorophyllins Substances 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
An inorganic non-intumescent fire-retardant coating is characterized by comprising the following components in parts by weight: 300-400 parts of cement, 150-250 parts of expanded vermiculite, 150-250 parts of expanded perlite, 50-150 parts of modified fiber, 100-200 parts of slag powder, 2-6 parts of cellulose, 8-13 parts of redispersible emulsion powder, 1-3 parts of polypropylene fiber, 10-30 parts of fireproof heat-insulating flame retardant with water absorption performance and expansion performance and 30-50 parts of auxiliary agent. The fireproof paint has the characteristics of environmental protection, low cost and excellent fireproof performance.
Description
Technical Field
The invention relates to the technical field of steel structure fireproof paint, in particular to inorganic non-expansion type fireproof paint, which is non-expansion type fireproof paint based on a cement binder.
Background
The development of the construction industry is promoted by the economic and social development, and the large-scale buildings such as exhibition halls, terminal buildings, large-scale malls, stadiums, high-grade hotels and industrial plants are continuously increased, and the development is towards the large-scale and beautiful directions, and the main bearing members are mainly steel structures.
For this reason, fire protection of steel structures is becoming increasingly interesting. Although the steel material is a nonflammable material, the fire resistance is far worse than that of a masonry structure and a reinforced concrete structure, and the mechanical strength of the steel material is reduced with the rise of temperature. When the temperature is raised to the critical temperature of the steel (typically 540 ℃), the yield stress is only 40% of the normal temperature. The steel material has a fire resistance limit of 15min only under the condition of direct burning of high-temperature flame. The use of fire-retardant coating is an ideal method for fire prevention of steel structure buildings. The steel structure fireproof paint is coated on the surface of the steel member to play a role in fireproof heat insulation protection, prevent steel from rapidly heating in a fire disaster to reduce strength, and avoid building collapse caused by loss of supporting force of the steel structure.
Steel construction fire retardant coatings can be generally classified into non-intumescent and intumescent types. The expansion type fireproof paint mainly generates inert gas through fire reaction, expands and insulates heat. The non-expansion fireproof paint is mainly the heat-resistant mechanism of the material. However, the expansion type fireproof paint can release a large amount of harmful gas when expanding when encountering fire, so that the environment is polluted to a certain extent, and the fire extinguishing personnel and the on-site evacuation personnel can be injured to different extents, and the serious people die. Therefore, the non-intumescent fire retardant coating has outstanding advantages from the aspect of environmental protection. However, in the case of the non-intumescent coating, a thickness of 35 to 40mm is mostly required in order to satisfy the fire resistance limit of 3 hours, and even though some documents disclose a few non-intumescent coatings having a thickness of less than 30mm, the heel is not stabilized in the market due to the excessively high cost and the like, and thus, the combination of the thickness and the fire resistance of the non-intumescent coating is still further improved.
Disclosure of Invention
The invention aims to provide an inorganic non-intumescent fire-retardant coating which is characterized by comprising the following components in parts by weight: 300-400 parts of cement, 150-250 parts of expanded vermiculite, 150-250 parts of expanded perlite, 50-150 parts of modified fiber, 100-200 parts of slag powder, 2-6 parts of cellulose, 8-13 parts of redispersible emulsion powder, 1-3 parts of polypropylene fiber, 10-30 parts of fireproof heat-insulating flame retardant with water absorption performance and expansion performance and 30-50 parts of auxiliary agent;
when in actual use, the water dosage satisfies the following conditions: and (3) coating: water mass ratio = 1, (1.2-1.5);
wherein the cellulose is carboxymethyl cellulose, carboxyethyl cellulose or carboxypropyl cellulose
Wherein the auxiliary agent comprises polyethylene glycol and a water reducing agent;
the further preferable components include 350 parts of cement, 200 parts of expanded vermiculite, 200 parts of expanded perlite, 100 parts of modified fiber, 150 parts of slag powder, 4 parts of carboxymethyl cellulose, 10 parts of redispersible latex powder, 2 parts of polypropylene fiber, 20 parts of fireproof heat-insulating flame retardant with water absorption performance and expansion performance, 24 parts of polyethylene glycol and 20 parts of water reducer; in actual use, 1400 parts of water was added.
The preparation method of the non-intumescent fire retardant coating comprises the following steps:
(1) Weighing powder with corresponding components;
(2) Placing the expanded vermiculite, the expanded perlite, the modified fiber and the slag powder into a stirring kettle for mixing, wherein the stirring time is 2-4 hours;
(3) Adding cement into the stirring kettle, and stirring for 0.5-1.5 hours;
(4) And adding the rest powder, namely carboxymethyl cellulose, redispersible emulsion powder, polypropylene fiber, fireproof heat-insulating flame retardant with water absorption performance and expansion performance, polyethylene glycol and water reducer into a stirring kettle under stirring for 1-3 hours, and finally obtaining the non-expansion fireproof coating.
The fireproof heat-insulating flame retardant with water absorption performance and expansion performance is prepared from the following components:
and (3) a component A: the waterproof paint comprises elastic waterproof emulsion A, a carbon source, a char forming catalyst, a foaming agent, titanium dioxide, elastic waterproof emulsion B and a proper amount of water; and the component B comprises the following components: a water-retaining agent; wherein, according to the mass ratio, in the component A, the weight ratio of the elastic waterproof emulsion A, the carbon source, the char forming catalyst, the foaming agent, the titanium pigment and the elastic waterproof emulsion B is (1-1.6): 4-8): 1-3: (1-3): (1-3): (0.4-0.6); the carbon source is pentaerythritol, dipentaerythritol and tripentaerythritol; the char-forming catalyst is ammonium polyphosphate; the foaming agent is dicyandiamide, ammonium oxalate, urea or hexamethylenetetramine; wherein the emulsion A is tertiary emulsion of vinegar or vinyl acetate emulsion, and particularly preferably Wake EZ3066 emulsion or rovace661 emulsion; emulsion B is a VAE emulsion, preferably Emultex FR 797; the preparation method comprises the following steps:
(1) Adding a carbon source, a char forming catalyst, a foaming agent and titanium dioxide into a grinder according to a proportion to grind and disperse;
(2) Adding the powder, the elastic waterproof emulsion A and water which are mixed in the step (1) into a high-speed mixer for mixing;
(3) Performing screw extrusion granulation or spray drying granulation on the mixture obtained in the step (2) to obtain a granular flame retardant semi-finished product;
(4) Placing the granular flame retardant semi-finished product obtained in the step (3) in a dispersing machine, stirring, spraying the elastic waterproof emulsion B, and drying to obtain a fireproof heat-insulating filler A;
(5) And (3) blending the fireproof heat-insulating filler A obtained in the step (4) with the granular water-retaining agent to obtain the final product fireproof heat-insulating flame retardant.
Wherein the grinding and dispersing time is 1-2 hours.
Wherein, the high-speed mixer in the step (2) is a high-speed kneader or a high-speed disperser.
Wherein in the step (4), the stirring speed of the dispersing machine is 200-600r/min.
Wherein, in the step (4), the elastic emulsion is sprayed for 0.5-2 hours while stirring.
Wherein the mass ratio of the fireproof heat-insulating flame retardant to the granular water-retaining agent in the step (5) is (2-3): 1.
wherein the water-retaining agent is a polyacrylic water-retaining agent.
Wherein the polymerization degree of ammonium polyphosphate is more than 600 and less than 1000.
After the technical scheme is adopted, the invention has at least the following beneficial effects:
(1) The inorganic non-expansion type fireproof paint is different from the conventional inorganic non-expansion type fireproof paint, the conventional non-expansion type fireproof paint only depends on the fact that the fireproof paint with larger thickness contains a large amount of fireproof heat-insulating fillers such as expanded vermiculite, expanded perlite and the like to realize the fireproof function, and the fireproof heat-insulating flame retardant with water absorption performance and expansion performance is added into the conventional fireproof paint. When a fire disaster occurs, the moisture in the paint continuously volatilizes, a large amount of heat on the surface of the steel is absorbed, and the temperature rise of the surface of the steel is delayed; when the temperature is further increased, the flame retardant A consisting of a carbon source, a char-forming catalyst and a foaming agent can show flow state before the char-forming reaction, can flow into a gap generated in the fireproof material after water is separated out, and forms a carbon layer with certain strength in the gap, so that the shape integrity and the overall strength of the fireproof material are ensured. Because of its early flowability and proper amount, the fireproof heat insulating fire retardant with water absorbing and expanding performance expands only in the inside space and has no influence on the shape integrity and strength of the fireproof coating. The amount of flame retardant must be strictly controlled and if it exceeds a certain amount, it leads to the formation of a carbon layer by expansion exceeding the voids, so that the strength of the fire-retardant coating is rapidly lowered. Therefore, the whole fireproof coating belongs to a non-expansion fireproof coating, and internal partial expansion occurs in a high-temperature stage, so that the coating has the excellent comprehensive properties of an inorganic non-expansion fireproof coating and an expansion fireproof coating.
(2) When the phosphorus-nitrogen intumescent flame retardant is used together with other flame retardants in the formula, the flame retardant effect is poor because the phosphorus-nitrogen intumescent flame retardant is less in dosage and is sparsely dispersed in the fireproof coating, and the contact reaction of the char-forming agent, the foaming agent and the dehydration and carbonization catalyst is incomplete. The phosphorus-nitrogen intumescent flame retardant is prefabricated into flame retardant particles through the waterproof elastic emulsion, so that three components of the phosphorus-nitrogen intumescent flame retardant can be effectively and fully contacted and reacted under the condition of small dosage, and a good flame retardant effect is generated.
(3) Compared with the adhesive effect of common polymer emulsion, the adhesive has certain waterproof property, and the adhesive network continuously connected inside the flame retardant particles can effectively cover most of ammonium polyphosphate, thereby effectively delaying the moisture absorption and hydrolysis of the ammonium polyphosphate.
(4) The elastic waterproof emulsion B is sprayed on the surface of the granular flame retardant obtained in the step (3) and is dried, so that an elastic waterproof polymer film is formed on the surface of the flame retardant, a capsule coating structure is formed, the waterproof property of the flame retardant is further improved, and a large amount of moisture in the water-retaining agent is prevented from causing the ammonium polyphosphate to be decomposed in a moisture absorption mode to fail.
(5) The waterproof elastic emulsion A and the waterproof elastic emulsion B have better elasticity and waterproofness with better comprehensive performance than common emulsions. For general emulsions, such as acrylic emulsion, the elasticity is good but the waterproof property is poor, and the polyurethane emulsion and the epoxy resin emulsion are good, but the elasticity is general, so that the carbon-forming expansion of the flame retardant can be obviously limited, and the flame retardant effect is greatly and negatively influenced.
The technical scheme of the invention is described in detail below with reference to specific embodiments.
Example 1
The preparation method of the fireproof heat-insulating flame retardant A with water absorption performance and expansion performance comprises the following steps:
(1) Carbon source pentaerythritol, a char forming catalyst ammonium polyphosphate, a foaming agent dicyandiamide and titanium pigment are mixed according to the weight ratio of 4kg:2 kg:2 kg: 2. 2kg, and adding the mixture into a grinder for grinding and dispersing for 1.5 hours.
(2) Adding the powder, the elastic waterproof emulsion A and water which are mixed in the step (1) into a high-speed mixer for mixing; the mass of the elastic waterproof emulsion A and the mass of water are respectively 1kg and 0.5kg, and the elastic waterproof emulsion A is EZ3066 emulsion. The high-speed mixer is a high-speed kneader.
(3) Extruding and granulating the mixture obtained in the step (2) by a screw to obtain a granular flame retardant semi-finished product;
(4) And (3) placing the granular flame retardant semi-finished product obtained in the step (3) in a dispersing machine, stirring, spraying 0.5kg of elastic waterproof emulsion B (Emultex FR 797), and then drying to obtain the fireproof heat-insulating filler A, wherein the dispersing stirring speed is 400r/min.
(5) And (3) blending the fireproof heat-insulating flame retardant obtained in the step (4) with the granular polyacrylic acid water-retaining agent according to the mass ratio of 2:1 to obtain the final product fireproof heat-insulating flame retardant A.
Example 2
Based on the example 1, the amount of water used in the step (2) was adjusted to 6kg, the high-speed mixer was selected as a high-speed disperser, spray drying granulation was used in the step (3), and the other preparation steps were the same, to obtain the flame retardant B.
Example 3
(1) Carbon source pentaerythritol, a char forming catalyst ammonium polyphosphate, a foaming agent dicyandiamide and titanium pigment are mixed according to the weight ratio of 4kg:2 kg:2 kg: 2. 2kg, adding the mixture into a grinder for grinding and dispersing for 1.5 hours, adding 5kg of granular polyacrylic acid water-retaining agent for blending, and obtaining a final product, namely the fireproof heat-insulating flame retardant C, according to the front-rear mass ratio of 2:1;
example 4
On the basis of example 1, step (4) was omitted to obtain a flame retardant D.
Example 5
Based on the embodiment 1, 8kg of expandable graphite and 2kg of titanium pigment are added into a grinder for grinding and dispersing for 1.5 hours in the step (1), and other preparation steps are the same, so as to obtain the flame retardant E.
Example 6
Based on the embodiment 1, the elastic waterproof emulsion A and the elastic waterproof emulsion B in the step (2) and the step (4) are replaced by polyurethane waterproof emulsion Dispercoll U53 which is common in the market, and other preparation steps are the same, so as to obtain the flame retardant F.
Example 7
The inorganic non-expansion fireproof paint comprises the following raw materials of 350 parts of cement, 200 parts of expanded vermiculite, 200 parts of expanded perlite, 100 parts of modified fiber, 150 parts of slag powder, 4 parts of carboxymethyl cellulose, 10 parts of redispersible latex powder, 2 parts of polypropylene fiber, 20 parts of fireproof heat-insulating flame retardant with water absorption performance and expansion performance, 24 parts of polyethylene glycol and 20 parts of water reducer; in actual use, 1400 parts of water was added.
The preparation method of the non-intumescent fire retardant coating comprises the following steps:
(1) Weighing powder with corresponding components;
(2) Placing the expanded vermiculite, the expanded perlite, the modified fiber and the slag powder into a stirring kettle for mixing, wherein the stirring time is 3 hours;
(3) Adding cement into the stirring kettle, and stirring for 2 hours;
(4) And adding the rest powder, namely carboxymethyl cellulose, redispersible emulsion powder, polypropylene fiber, fireproof heat-insulating flame retardant with water absorption performance and expansion performance, polyethylene glycol and water reducer into a stirring kettle under stirring for 3 hours, and finally obtaining the non-expansion fireproof coating.
Among them, thick inorganic non-intumescent fire-retardant coatings A, B, C, D, E and F were obtained by using the fire-retardant and heat-insulating fire-retardant agents A, B, C, D, E and F having water absorption property and intumescent property prepared in examples 1 to 6.
When in actual use, the fireproof paint is uniformly mixed with 1400 parts of water.
Fire performance test
The fire resistance limit was tested according to GB 14007-2018, coating thickness 25mm
| Sample type | Flame retardant type | Fire resistance limit/min |
| Inorganic non-expansion fireproof paint A | Flame retardant A | 230 |
| Inorganic non-expansion fireproof paint B | Flame retardant B | 245 |
| Inorganic non-expansion fireproof paint C | Flame retardant C | 160 |
| Inorganic non-expansion fireproof paint D | Flame retardant D | 200 |
| Inorganic non-expansion fireproof paint E | Flame retardant E | 140 |
| Inorganic non-expansion fireproof paint F | Flame retardant F | 190 |
Therefore, the flame retardant performance of the inorganic non-intumescent fire retardant coating added with the flame retardant modified by the special process is greatly improved.
Claims (10)
1. An inorganic non-intumescent fire-retardant coating is characterized by comprising the following components in parts by weight: 300-400 parts of cement, 150-250 parts of expanded vermiculite, 150-250 parts of expanded perlite, 50-150 parts of modified fiber, 100-200 parts of slag powder, 2-6 parts of cellulose, 8-13 parts of redispersible emulsion powder, 1-3 parts of polypropylene fiber, 10-30 parts of fireproof heat-insulating flame retardant with water absorption performance and expansion performance and 30-50 parts of auxiliary agent;
the fireproof heat-insulating flame retardant with water absorption performance and expansion performance is prepared from the following components:
and (3) a component A: the waterproof paint comprises elastic waterproof emulsion A, a carbon source, a char forming catalyst, a foaming agent, titanium dioxide, elastic waterproof emulsion B and a proper amount of water; and the component B comprises the following components: a water-retaining agent; wherein, according to the mass ratio, in the component A, the weight ratio of the elastic waterproof emulsion A, the carbon source, the char forming catalyst, the foaming agent, the titanium pigment and the elastic waterproof emulsion B is (1-1.5): 4-8): 1-3: (1-3): (1-3): (0.4-0.6); the carbon source is pentaerythritol, dipentaerythritol and tripentaerythritol; the char-forming catalyst is ammonium polyphosphate; the foaming agent is dicyandiamide, ammonium oxalate, urea or hexamethylenetetramine; wherein the emulsion A is tertiary emulsion of vinegar or vinyl acetate emulsion; emulsion B is a VAE emulsion; the preparation method comprises the following steps:
(1) Adding a carbon source, a char forming catalyst, a foaming agent and titanium dioxide into a grinder according to a proportion to grind and disperse;
(2) Adding the powder, the elastic waterproof emulsion A and water which are mixed in the step (1) into a high-speed mixer for mixing;
(3) Performing screw extrusion granulation or spray drying granulation on the mixture obtained in the step (2) to obtain a granular flame retardant semi-finished product;
(4) Placing the granular flame retardant semi-finished product obtained in the step (3) in a dispersing machine, stirring, spraying the elastic waterproof emulsion B, and drying to obtain a fireproof heat-insulating filler A;
(5) And (3) blending the fireproof heat-insulating filler A obtained in the step (4) with the granular water-retaining agent to obtain the final product fireproof heat-insulating flame retardant.
2. The fire retardant coating of claim 1 wherein in step (1), the time for grinding and dispersing is from 1 to 2 hours.
3. The fire retardant coating of claim 1 wherein the high speed mixer in step (2) is a high speed kneader or a high speed disperser.
4. The fire retardant coating of claim 1 wherein in step (4), the disperser stirring speed is 200-600r/min.
5. The fire retardant coating according to claim 1, wherein in step (4), the elastic emulsion is sprayed for 0.5 to 2 hours while stirring.
6. The fire-retardant coating according to claim 1, wherein the mass ratio of the fire-retardant heat-insulating flame retardant to the particulate water-retaining agent in the step (5) is (2-3): 1.
7. the fire-retardant coating according to claim 1, wherein the water-retaining agent is a polyacrylic water-retaining agent.
8. The fire retardant coating of claim 1 wherein the degree of polymerization of the ammonium polyphosphate is greater than 600 and less than 1000.
9. The fire retardant coating according to claim 1, wherein the auxiliary comprises polyethylene glycol and a water reducing agent.
10. The fire retardant coating of claim 1 wherein the cellulose is carboxymethyl cellulose, carboxyethyl cellulose or carboxypropyl cellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311752746.3A CN117534388A (en) | 2023-12-19 | 2023-12-19 | Inorganic non-expansion type fireproof paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311752746.3A CN117534388A (en) | 2023-12-19 | 2023-12-19 | Inorganic non-expansion type fireproof paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117534388A true CN117534388A (en) | 2024-02-09 |
Family
ID=89792069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311752746.3A Pending CN117534388A (en) | 2023-12-19 | 2023-12-19 | Inorganic non-expansion type fireproof paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117534388A (en) |
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2023
- 2023-12-19 CN CN202311752746.3A patent/CN117534388A/en active Pending
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